每个孩子,都是妈妈的一颗行走在身体外面的心!
这多么奇怪,相对于我们身体外面的对称性,我们内部却是那么不对称。
It is strange how, given the symmetry of our external bodies, we are so asymmetrical on the inside.
然而,昆虫其实有六条腿,身体分为三部分,还有外骨骼,即长在身体外面的骨骼。
But an insect actually has six legs, a three-part body, and an exoskeleton, which is a skeleton on the outside of its body.
然而,昆虫其实有六条腿,身体分为三部分,还有外骨骼,即长在身体外面的骨骼。
But an insect actually has six legs, a three-part body, and an exoskeleton, which is a skeleton on the outside of its body.
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